Minnie's Melodyland Toon
 Posted: Sun Mar 16, 2008 8:03 am Post subject: |
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| If you have enabled port triggering for ports 6112 and 6667, have the latest video drivers, know that your modem is properly working and are still experiencing disconnects you may need to adjust your MTU value. The MTU (maximum transmission unit) is described as the size of the largest datagram that can be sent over a network. If the datagram is larger than an MTU, the datagram must be fragmented into multiple smaller datagrams. What this means for MTUs and Toontown....too high an mtu value will cause fragmentation of the data packet and you will experience disconnects.
Here is a good site that explains how to find the correct mtu value for your home network. http://www.dslreports.com/faq/5793 Once you have determined the correct mtu value, access your router's configuration, and change the value to that number (and don't forget to add 28 and document the value that you are changing just in case you need to change it back). The site suggests downloading DrTCP (which I have never tried) Since most of you are using a router, there is no need to download any program---determine the value, access your router configuration and insert this number as your mtu setting) Hope this helps and isn't too "geeky" and confusing. This is what my test showed: C:\Documents and Settings\Kathy>ping www.google.com -f -l 1492 Pinging www.l.google.com [72.14.205.104] with 1492 bytes of data: Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Ping statistics for 72.14.205.104: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss), C:\Documents and Settings\Kathy>ping www.google.com -f -l 1482 Pinging www.l.google.com [72.14.205.104] with 1482 bytes of data: Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Ping statistics for 72.14.205.104: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss), C:\Documents and Settings\Kathy>ping www.google.com -f -l 1472 Pinging www.l.google.com [72.14.205.104] with 1472 bytes of data: Reply from 72.14.205.104: bytes=56 (sent 1472) time=29ms TTL=245 Reply from 72.14.205.104: bytes=56 (sent 1472) time=30ms TTL=245 Reply from 72.14.205.104: bytes=56 (sent 1472) time=30ms TTL=245 Reply from 72.14.205.104: bytes=56 (sent 1472) time=29ms TTL=245 Ping statistics for 72.14.205.104: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 29ms, Maximum = 30ms, Average = 29ms I started with 1492, and decreased by ten until I received a reply, rather than the message that the packet needed to be fragmented. At 1472 I received a reply. When I add 28 to 1472 (the value where my packet did not fragment) my correct mtu value is 1500, the default value, so I do not need to change my MTU settings. Good luck  _________________ Prince Graham Fuzzysnooker 119 Laff HW 50, Robber Baron 50 Cricket Crinklesnout 115 Laff HW 50, RB15 Banana Brain 127 Laff HW 50, Robber Baron 50, Big Wig 50 Thunder Thighs 111, Laff, HW21, RB14 Pixy aka Mighty Mouse 111 Laff, HW32, NC Ivana Firehydrant 109 laff, HW20, BC Juana Firehydrant 41 laff Sell Uber, HW50 Anita Firehydrant 77 Laff Cash Uber, HW19, RB37 and a few shy toons who wish to remain nameless Test toons: Pixy, Mr Jinx, Dooda Bunnyhop, Mouse Trap, Mia Quacker, Mia Banana Brain, Flea Picker, Mia Fleapicker "Today's mighty oak is just yesterday's nut that held its ground." - Anonymous |
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